Last-removing device



J'uly 19, 1921.

6. P 5. cRoss us'r mm ovms DEVICE Filed lay 19 1922 Patented July 19, 1927.

UNITED STATES PATENT OFFICE.

GARRETT P. S. CROSS, OF SWAMPSCOTT, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

Application filed May 19,

This invention relates to devices forremoving lasts from shoes, and is illustrated as embodied in a device having an improved last-engaging portion.

Heretot'ore it has been the practice to remove lasts from shoes either manually or with the aid of a machine, by grasping the shoe in any suitable manner and by holding the last for separation from the shoe by means which includes an ordinary jack pin. In order to prevent possible slipping of a last on such a jack pin, it is necessary to provide at all times a considerable torque tending to twist the jack pin in the thimble hole of the last, and this requires the exercise of considerable force which is sometimes sufficient to break either the last or the jack pin.

To avoid breakages of this sort and to facilitate the use of devices of this charactor for removing lasts from shoes, it is an object of this invention to provide an improved device which can readily be locked securely to a last and which is provided with a broad bearing surface to prevent possible breakage and to provide an eliicient application of force in removing a last from a shoe. In the form illustrated in the accompanying drawings such a lastremoving device is provided with a hook which interlocks by a lateral. twisting motion with the walls 01? a corresponding hook-shaped recess in a last. In order to provide the above described broad bearing surface, the device is provided with shoulders extending at right angles to the hook so that there-is no interference with the interlocking action, and these shoulders are arranged to bear against the last during the removal of a shoe therefrom.

Other objects of my invention will be apparent from the following, description of the embodiments of my invention shown in the accompanying drawings in which Fig. l is a top plan view showing a last removing device mounted on a bench and with a last and shoe (partly broken. away) in co-operative relation thereto;

Fig. 2 is a perspective of the device shown in Fig. 1 with the last and shoe shown in dotted lines;

Fig. 3 is a perspective corresponding to Fig. 2 showing a modified form; and

Fig. 4 is a detailed fragmentary view,

LAST-REMOVING DEVICE.

1922. Serial No. 562,171.

partially in elevation and partially in section, showing the hook-shaped tongue of the last removing device and the shape of the recess in the last which receives the tongue.

. Asshown in Figs. 1 and 2, my improved last removing device comprises a stem or body portion 10 which may be provided with a base 12 constructed and arranged to be secured to a bench 14, or other suitable support. The body portion 10 of the device is provided with a hook shaped tongue or extren'iity 16 adapted to interlock with the walls of a corresponding hook-shaped recess R (Fig. 4) in a last by relative lateral twisting movement of the last and hook, that is to say, by a motion in a plane cutting lengthwise of the last through the opposite upper engaging sides thereof, rather than in a plane. cutting through the bottom or sole engaging face of the last. The particular form of last shown in Fig. 1 is the forepart of an improved last invented by me and which forms the subjectanatter of my copending application Serial No. 165,951, filed May 2,1921. It will be obvious, however, that my improved last removing device may be used to remove lasts of other types, including complete lasts and forms of various kinds as well as fore and heel parts of arable lasts, and the term last as used in this specification and in the claims is intended to designate broadly any type of last or form which requires removal. from a shoe. Bearing shoulders 18 and 20 extending in a direction at right angles to the hook 16 are arranged to engage the surface of the last at opposite sides of the hook-shaped recess therein, as shown in Figs. 1 and 2. It will be noted that removal ota shoe S fromv a last held in the manner illustrated in these figures tends to twist the last in a plane at rightangles to the plane of lateral twisting required to interlock the last and the last removing device, and that this tendency is prevented by shoulders 18 and 20. Thus the last may be attached to and detached from the hook 16 by an unresisted twisting movement, and when attached, it is locked thereto rigidly to resist movement of the last during the removal of the shoe.

As shown in Figure 3, instead of mounting it on a bench or other support, my improved last removing device may be provided with a handle 30 to facilitate its inanipulation.

iile particular embodiments of my in vcntion have been illustrated and described it is not my intention to limit its scope thereby or otherwise than by the terms of the tl]:)13811(l0tl claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United tates is:

1. A last removing device comprising a hook to interlock with a hookshaped recess in a last by relative twisting movement of the last and hook in a plane cutting lengthwise of the last through the opposite upper engaging sides thereof, and shoulders extending in direction at right angles to said hook to engage the last on opposite sides oil" the recess. e

2. A last removing device comprising a hook to be inserted in a co-operating recess in a last having a shoe mounted thereon and interlockwith the last, and a plurality of bearing portions adjacent to the hook for engaging the exterior of the last to prevent separation of the last and said device during the removal of the shoe from the last.

8. A last removing device comprising a base to be secured to a suitable support a portion to be insert-edinto and to interlock with a last, and oppositely extending projections located adjacent to the interlocking portion of the device to bear against one end or the last to prevent relative movement or the device and the lastin opposite directions tending to separate them during the removal of a shoe from the last.

4;. A last removing device comprising a portion to be inserted into and to interlock with the last, a shoulder located adjacent to the interlocking portion to bear againstthe outside of the last to prevent relative movement of the device and the last in one direction and another shoulder to resist relative movement of the last and said device in another direction. tending to separate them during removal of a shoe from the last.

5. A last removing device comprising a body portion and a last-engaging head, said head being constructed and arranged to interlock with a last by relative twisting movement of the last and head in a plane cutting lengthwise of the last through the opposite upper engaging sides thereof, and positively to prevent separation of the last and said movement of said device and last in either direction about one axis and in one direction about a second axis at right angles to the first axis.

7. A last removing device comprising a 1 base to be secured to a suitable support, an

arm projecting from the base, a hook extending from the free end of the arm and arranged to interlock with a recess in the rear end face of a last 't'orepart by sidewise twisting movement of the last, and lateral projections on said arm extending in opposite directions from the base of the hook, said projections being arranged to resist movementoi? the last in directions at right angles to the plane of said twisting movement.

A last removing device comprising a portion to interlock with a last and portions to bear against the exterior of the last to support the last in such a manner that when pressure is exerted on the last in one direction the last will be rigidly held on the device and when pressure is'exerted on the last in a direction at right angles to the first direction the last will become disengaged from the device.

9. A last removing device comprising a body portion, and a hook shaped tongue projecting-from one end of the body portion to enter a recess in one end of a last the outer and inner ends of the tongue being disposed substantially at right angles to one another and the tongue and the recess being oi. the same general shape so that the tongue will interlock with the walls of the recess in such a manner as to prevent relative movement between the hook and the last in certain directions and to permit relative movement between the hook and the last in certain other and different directions.

In witness whereof 1 have signed my name to this specification.

GARRETT P. s. oaoss. 

